Relief-valve.



PATBNTED 00T. 9, 196e.

w. P. KRICHBAUM.

RELIEF VALVE. APrLzoATIon FILED ann. 2a. m5.'

s I l INVENTOR 'I I ATTORNEY. l

` are employed'for relieving the excess of aI` UNITED STATESl .PATENT `oF1rron` WILLIAM F. KRICHBAUM, OF NEWARK, NEW JERSEY, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO FOSTER ENGINEERING CO., OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.l 1

RELIEF-VALVE.

Specification of Letters Patent.

Application filed September 23, 1905. Serial No. 279,795.

Patented Oct. 9, 1,906.

To @ZZ whom, it may concern:

Be it known Ithat I, WILLIAM F. KRIOH- BAUM, a citizen of the -United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Relief-Valves; and I do hereb declare the followin full, clear, andYeXact description o the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, which form a part of this speciiication.

This invention relates to that class of valves known as relief-valves and which fluid-pressure which is rising above a certain predetermined point, such relief being either into the atmosphereor into a low-pressure tank or chamber or elsewhere. i

The objects of the invention are to secure an auxiliaryoperated valve of such a character; to secure a balanced valve which shall work more sensitively; to enable the closeness of working of the valve to be controlled by the size ordiameter of the auxiliary-valve passage; to secure a simple and improved construction, and to obtain other advantages and results, some of which ma be hereinafter referred to in connection wit the description of the working parts.

The invention consists in the improved relief-valve and in the arrangements and combinations of parts of the same, all substan` tially as will be hereinafter set forth, and finally embraced in the clauses of the claim.

Referrin to the accompanying drawings, in which li e numerals of reference indicate corresponding parts in 4each of the several iguresFigure 1 is a central vertical section of my improved valve, taken on line Fig. 2; and Fig. 2 is a partial elevation of the valve looking lengthwise of the pipe.

In said drawings, 2 indlcates the bod portion of the valve, apertured and threadedat one end 3 to receive a high-pressure supplypipe and at its other end 4 to receive a continuation of said pipe be ond the valve. Between its said ends the ody portion has a partition' 5, as is common in globe-valves,

and in said partition is an aperture.6,:forming at its under side a horizontal seat for a valve 7. Said valve 7 has a stem which' extends both upwardly and downwardly, the lower portion 8 being surrounded by a coiled spring 9, which supports the Weight of the valve and its piston. The upper portion 1() of the stem extends through the top .of the valve-chamber proper and engages a iston 11, arranged in a p1ston-cylinder12, w 'ch is preferably formed integral with the valvebody 2 and separated therefrom by the partition 30. Upon the top of said cylinder 12 of the body portion 2 of the valve is mounted a top piece 13, the two arts being preferably connected by means o flanges 14 15 and bolts 16. The said top 13 has a central boss 17 at its bottom, which projects downward into the top of the piston-cylinder clamped, or otherwise removably secured in position.

In the upper part of the passagev 39 1s mounted a valve 37, having an up er head 36, ada ted to iill said passage, an a lower reduce shank 35, sliding in a spider 34 to hold it central. The end of said shank 35 forms a valve-surface adapted to Aengage the seat 20, and the top ofthe valve abuts at its centerl against a diaphragm 21, a coiled spring 22, arranged between the said s ider 34 and the head 36 of the valve,y ho ding said valve against the said dia hragm. The said diaphragm 21 is arrange Iin a chamber formed by recessing the u per extremity of the top piece 13, as at 23, t e outer periphery of said top being-threaded, as at 24,.to receive a diaphragm-cap 25, adapted to screw thereonandform with the said recess 23 a chamber. The diaphragm 21 is arranged transversely across said chamber, being held or clamped at its edges between the said parts 13 and 25, and which arts might obviously be separably connected From the lower ead to the passage 39 of the top piece 13, and

- excess ressure discharges directly through the va ve-body portion 2. Furthermore, the area of the top of the valve 37'Which presses against the under side of the diaphragm 21 is made equal in area to the valveseat 20, so that the valve 37 is perfectly balanced so far as normal Huid-pressure upon it is concerned. Again, the closeness of Working of the valve can be controlled by varying the size of the passage 19 of the auxiliary valve-that is, by enlarging it a greater volume of pressure is quickly admitted to o en the main valve, while by making it sma ler the flow is retarded, Aand consequently the opening of the main valve is delayed.

The diaphragm-cap 25 of the valve has a central aperture or passage which receives at its lower portion 28 aspring-washer 29, resting `aglainst the upper side of the diaphragm 21, w

ile the upper portion 31 of said passage is interiorly threaded, as at 32, to receive an adjusting-nut 33, said nut and the washer 29 being adapted to receive between themselves a coiled spring 40. This. spring, it `will be seen, thus exerts the pressure against which the auxiliary valve 37 opens, and such pres- 'sure is regulated lby screwing the adjustingnut 33 either up or down. When adjusted to the desired position, an interiorly-thlreaded cap 41 of the same internal diameter as the part 31 of the passage and adapted to screw upon the adjusting-nut is applied, as shown, said cap servin both as a lockingnut and to protect the t eads of the adjusting-nut, which would otherwise be ex osed.

Obviously my improved valve t us described can be emplo ed for any ressure uid whatever and wil always wor close. Furthermore, it should 'be noted that my valve will operate equally well to relieve either into the atmosphere orinto a lowpressure chamber. Y

Having thus described the invention, what I claim as new is- 1. in a pressure-controlling device, a body portion having inlet and outlet` ends with a partition providing a valve-seat and having a piston-cylinder at one side, a main valve for said valve-seat havin a stem and a piston therefor in said cylin er, a to piece closing the outer end of said piston-cy inder and having a chamber provi :n an auxiliary-valve seat with a assa e lea therefrom to the piston-cylin er, t e said odyportion and 'the inlet en top piece providing a passage'from the inlet end of the body portion to said chamber, an auxiliary valve iii said chamber and -being adapted to engage said seat to close communication between the said passages, a ilexible diaphragm closing the outer end of said piston therefor in said cylinder, a top piece closing the-outer end of said piston-cylinder and having a chamber providing an auxiliary valve-seat with a passage leading therefrom to the piston-cylinder, the said body portion and top piece providing a passa e from the inlet end of the body portion to said chamber,

an auxiliary valve in said chamber and being adapted to engage s aid seat to close communication between the said passages, a flexible diaphragm closing the outer end of the chamber, and a coiled spring holding the auxiliary valve against said diaphra m.

3, In a pressure-control in device, a body portion having inlet and out et ends With a partition between providing a valve-seat and having a piston-cylinder at one side, a main valve for said valve-seat having a stem and a piston therefor in said cylinder, a top piece closing the outer end of said piston-cylinder and having achamber providin an auxiliaryvalve seat with a assage leadm therefrom into the piston-cy inder, the sai body portion and toppiece providing a passage from the inlet end of the body portion to said chamber, an auxiliary valve in said chamber and being adapted to enga e said seat to close communication between e said passages, a flexible diaphragm closing the outer end of said chamber, a diaphragm-cap above Said diaphragm, a spring for said cap .adapted to press upon the diaphra m, an adjustingnut for said spring adapte to screw into said diaphragm-cap, and a locking-cap adapted to screw onto said adjusting-nut.

4. In a pressure-controllin device, a body portion having inlet and out et ends with a partition'between providing a valve-seat and having a piston-cylinder atone side, a main valve-for said valve-seat having a stem and a piston therefor in .said cylinder, a top piece closing thev Outer end of -said piston-cylinder and having achamber providing an auxiliaryvalve seat with a passage leading therefrom into the piston-cylinder, the said body ortion and top iece roviding a passage om oft e body portion to said chamber, an auxiliary valve 1n said chamber and being adapted to engage said seat to cios@ IIO the outer end of said piston-cylinder and probody portion to said passage ofthe t'op piece,

partition between providing a valve-seat and valve or said valve-seat having a stem and a communication between thesaid passages, a flexible diaphragm closing the outer end of said chamber, a diaphragm-cap above said diaphragm, and means for establishing a predetermined pressure upon said diaphragm.

5. In apressure-controlling device, a body portion `having inlet and `outlet ends with a partition between providing a valve-seat and aving a piston-cylinder at one side, a main' valve for said valve-seat having a stem and a piston therefor in said cylinder, atop piece closing the outer end of said piston-cylinder and having a chamber providing an auxiliaryvalve seat with a assage leading therefrom into the piston-cy inder, the said body portion and top piece providing a passage from the inlet end` of the body portion to said chamber, an auxiliary valve in said chamber and being adapted to engage said seat to close communication between the said passages, a flexible diaphragm closing the outer end of said chamber, a diaphragm-cap above said diaphragm, land a sprin on said cap adapted to press upon the sai diaphra m.

6. In a pressure-controlling device, aIiody portion having inlet and outlet ends with a partition between providing a valve-seat and having a piston-cylinder at one side, a main valve for said valve-seat having a stem and a piston therefor in said cylinder, a top piece at viding a central chamber interiorly threaded at its lower end, a seating-plug screwed into said threaded end having a passageforming at its upper end a valve-seat, the said body portion of the valve and the top piece providing a passage from the inlet end of the and an auxiliary valve for said seating-plug. 7. In a pressure-controlling device, a ody portion having inlet and outlet ends withl a havin a piston-cylinder at one side, a main piston therefor in said cylinder, a top piece at the outer end of said piston-cylinder, a seating-plug removably held by said top piece and having a passage forming at its outer end a'valve-seat, the said body portion and top piece providing channelsV placing said assage in communication with the inlet en of the valvefbody portion and the piston-cylinder, epd an auxiliary valve for said seat of said u p 8g In a pressure-controllin device, a body portion having inlet and ou'et endswith a partition between providing a valve-seat and avin ya piston-cylinder atone side, 'a main valve or said valv e-seat having a stem and a piston therefor in said cylinder, a top piece at the outer end of said piston-cylinder and pro-l viding a control-chamber, a removable seating-plug at the lower end of said chamber having a passage forming at its end next the top piece a valve-seat and leading to the piston-cylinder, the said body portion. and top piece providing a passage from the inlet end of the body ortion to said chamber, and an auxiliary va ve for said seat of said plug.

9. In a pressure-controlling device, a body portion having inlet and outlet en ds with a artition between providing a valveseat and aving a piston-cylinder at one side, a main valve for said valve-seat having a stem and a piston therefor in said cylinder, a top piece closing the outer end of said pistolncylinder and having a chamber providing an auxlharyvalve seat with a. passa e leading therefrom to the piston-cylinder, t and top piece providing avpassage from the inlet end of the body portionto said chamber, an auxiliary valve in said chamber having the direction of it's closing movement the same as the direction' of flow of the fluid through said passage and being adapted to close communication between the said passages, a `flexible diaphragm closin@r the outer end of said chamber, and means for holding the auxiliary valve against said diaphragm.4

10. Ina pressure-controllin device, a body portion having inlet and out et ends with a artition between providing a valve-seat and aving a piston-cylinder at one side, a main valve for said valve-seat adapted to close with the flow therethrough and having a stem and a piston therefor in said cylinder, a

piece closing the outer end of said auxiliary-valve seat with a passage lea therefrom to the piston-cylinder, the said body-piece and top piece providing a passage from the inlet end of the valve-body to said chamber, an auxiliary valve in said chamber having the direction of its closing movement the same as the direction of flow of the fluid to Y istoncyilinder and having a chamber provi ingran mv through said passage and being adapted tol close communication between the said passages, a'flexible diaphragm closin the outer end of said chamber, and means for holding the auxiliaryvalve against said diaphragm.

In testimony that claim the foregoing I have hereunto set my hand this 7th day of September, 1905.

WILLIAM F. KRICHBAUM.

e said bodyportion IOO IIO 

